Internal-combustion engine.



Patented Sept. 1, 1914.

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n veA/How mm l Cha/(e917. L endMe WU? we @we 624mm, @kil 1 V Sammy G. F. LEMBKB. INTERNAL GOMBUSTION ENGINE.

APPLICATION FILED FEB. 7, 1913.

1,108,916` Patented Sept.1,1914.

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Charlas EL @11d/)ke w www C. P. LEMBKE.

INTERNAL COMBUSTION ENGINE APPLIGLTION FILED rum. 191s,

1,108,916, Patented Sept. 1, 1914 3SHEETSASHBET 3` STA i CHARLES F. LEMBKE, OF VALPARAS-G, INDIN.

INTERNALCOMBUSTIGN ENGNE.

To all whom it may cancer/L Be it known that I, CHARLES F. Lehmann, a citizen of the United States, residing at Valparaiso, in the vcounty of Porter and State of' Indiana, have invented new and useful Improvements in nternalCombus tion Engines, of which the foll'mvingjy is a specification.

This invention relates to internal combustion engines, the object. in view seing to provide a practically noiseless valve arrangement` which will do away enti rely 'with the usual noisy puppet valves new in common use, the engine embodying, in connection with each cylinder thereof, a disksliaped rotary valve which operates between a .combined inlet and exhaustc-hest and the cylinder, so as to properly time the admission of explosive mixture to the combustion chamber of the cylinder and the. exhaust of the burnt gases therefrom. v Y

A further object of the invention is to provide means for obtaining a const-ant and close Contact between the disk-shaped valve and the adjacently located abutting `faces of the chest and cylinder toprevent leakage and consequent loss of power, the consti-ire tion also providing for the rapid and accw rate openingsT and closing?r of the exhaust and inlet ports.

A further object of the invention is to pro vide means. for thoroughly seavenging.;- the cylinders withfresh air immediately after veach active or Working stroke of the engine..

A further object of the invention is to provide a novel arrangement of jacket and controlling valve for heating the intake pipe or manifold with the exhaust or burnt gases leaving the cylinder. Y

With the above and other objects in view., the invention consist-s in the construction, combination andk arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the. claims hereunto an pended.

In the drawings: Figure 1 is a side elevation, partly in section, oi" a founcylindrr in ternal combustion motor, embodying the present invention. Fig. 2 is a vertical cross section through the same on the line 2--2 of Fig. l, looking in the direction of the arrow. Fig. 3 is a partial vertical cross section taken on the line 3-3 of Fig. 1, looking in the direction of the arrow. Fig. 4 is a vertical cross Section on the line 4 4 of Fig. 1. Fig.

Specification ofletters atent. Application tiled Echi-nary 7, 1913.

Patented Sept. 1 1914.

Serial No. NLC-899.

an inner edge View .of the gas chest.. i 6 is a side elevar/imi oi' one et' the disk valves. Fig. 7 a diametrieal section ihrougli the valve, showing the valve shaft in elevation. l Y.

lflxile l have illustrated the invention as associated with a four-cylinder engine of the f-:iur-cvcle type. 'it will, of course, be understood.. as lie dern-intimi prnceeds. that the invention is appli ilffle to an engine having env nunllwr nl. Cylinders.

ln tlm drawingijs, l. designates the crank ease of the engine which is shown as provided in the battom thereof with an oil snmp 2 having an .inclined bottom door 3, by which the oil is led bv `:gravity toward one end of the crank. use, where it passes through screen il; covering the inlet nozzle 5 of an oil pump ll which is operated in the manner hereinafter setiforth.

In the bottom of the crank case is arrange-d an oil pan 7 divided oli' by partitions 8 into separate compartments, intol which` the cranks are adapted to dip for supplying lumication by the splash system to the cylinders and pistons.

i) designates the crank shaft 1G the cylinders, 11 the pistons, and 12 the connecting rods, all of said parts being of the usual construction and arrangement.

in cari` ing: ont this invent-ion, each of the cylinders ll is priivided at one side with a flat milled linee 13, and a single relatively large combined intake and exhaust port 14 leading from the combustion space of the cylinder outwardly through the milled face thereof, as elcarlv sillown in Fig. 1, Arranged just oppe; 'te the face 13 of the cylinder is the. correspondingly flat and milled face. 15 et a ehest- 1G,'`while between the adjacent faces ot the chest land cylinder is arranged a rotary disk valve 17 which is shown in detail in Figs. 6 and 7, wherein i ter with 'the combined in ,t and ci; 14 of the cylinder. as clearly shown il Y l. t this point, it may 'oe noted that in a erably a single one, .such as is shown inV section at the right hand end of Fig. 1, and also shown in side elevation in Fig. 3, and in vertical section in Fig. 4.

By reference to Figs. 2, 3 and 4, itL will be observed that the gas chest 16 has associated therewith a gas intake pipe 2O which 'is jacketed or double-walled, as shown at 2l,

thereby leaving an tintervening heating space 22 which is placed in communication' with the exhaust pipe, 23 by means of a con nection 24 which is controlled by. a-butterfly valve 25 provided with a suitablevoperating handle 26, which enables the exhaust gas to be passed around the intake pipe for the purpose of heating the latter under certain conditions, `such as in primarily starting the engine, particularly in cold weather. The intake pipe 20 leads into a gas re'- ceiving chamber 27 within the gas chest, said chamber being divided ofi' -from the exhaust chamber 28 of the chest bymeans off an intervening web or partition 29, a porvtion 29 of which extends concentrically to the axis of the rotary disk valve, as shown in Fig. 4., The remainder of the receiving chamber 27 is defined by the inner concen-` tric Wall 30, the inner end Wall 31 of the chest, and a bottom partition 32, vbeneath which is a water jacket space 33, another water jacket space 34 being located above the exhaust chamber 28 and divided therefrom by a Wall or partition 35.

36 designates a passage leading from the exhaust chamber 28 into the exhaust pipe or manifold 23. The chest is also provided in the top wall thereof with an opening'37 adapted to receive a pipe connection 38, by means of which communication is obtained between the water jacket of the cylinder and the water jacket of the gas chest, thus insuring the proper cooling of all parts of the engine.

Referring now to Fig. 3'of the drawings, it will be observedv that in its milled face the gas chest 16 is provided with packing rings 39 which' are .concentric to the axis of the disk valve, the packing rings or segments 39 being received in grooves 40 in the face of the gas chest, and being normally pressed outwardly by means of springs 41 arranged behind the ring segments, whereby the latter are held in close gas tight Contact with the adjacent face of the rotary disk valve 17. The side of the gas chest which abuts against the valve is also providedwith an inlet port 42 and an exhaust port 43, and

by reference to Figs. 3 and `4, it Will be observed that these ports arie of segmental` trally across the space occupied by the ports l 42 and 43, and thereby divides said ports from each other, this being further carried out by the packing ring segmentv 39 which is contained in a groove in said partition wall 29', as shown in Fig. 1. In a somewhatl similar manner the milled face of the cyl` inder is provided with packing rings 44 arranged. in concentric relation to each other and to the port 1.4, as shown in Fig. 2, the

said rings being continuous or endless, and being arranged in grooves in the wall of the cylinder, and normally pressed outwardly by means of springs 4,5, so as to effect a gastight joint between the wall of the cylinder and the rotary disk valve 17. The rotary disk valve 17 is mounted fast on the valve shaft 46, or'in the case of an engine embodying a plurality of cylinders, all ofthe disk valves are mounted fast on a common valve shaft, as shown in Fig. 1, said'yalve shaft being mounted in suitable bearings at one side of the center' of the engine and being provided with a sprocket wheel 47, from which a drivingchain 48 runs around another sprocket Wheel 49 fast on the crank shaft 9, motion in this way 'being transmit-- ted from the crank shaft to the valve shaft,

so as to drive the last-named shaft at half.-

the s'peed of the crank shaft, which is necessary in a four-cycle engine. Near its opposite end,'the valve shaft 46' is provided with an eccentric 50, to the strap 51 'of which is connected the rod 52 of' the oil pump 6, hereinabove referred to.. In this Way, the oil pump is continuously operated at half the speed of the crank shaft, and serves as a means for causing the oil to circulate to the different parts of the engine, it vbeing intended to pump the oil to the disk valves, in order to properly lubricate said valves where they come into contact with the chests and cylinders. l

The disk valves are inclosed b a suitable casing 53, as shownl in Fig. 2,- t e shaft 46 passing through and being journaled in. said casing. Each cylinder, the preferred embodiment of this invention is provided with an air inlet pipe 54, as shown in Fig. 2, said pipe extending through the casing 53 and .receiving its supply of air from the outside thereof. At its inner end, the pipe 54 connects with its respective cylinder, and at a suitable point in said pipe is arranged a valve casing 55, the valveG of which is lated to the shaft and remainder of the motor that air is admitted through each connection 54 to its cylinder at the end of the power stroke, and before the exhaust stroke, said air entering the cylinder and thereby helping to cool the piston head, and also assisting in a thorough scavenging of the burnt gases which are swept entirely from the cyliinler by the action of the air and the piston, thus leaving the combustion space perfectly clean for a fresh charge of explosive mixture.

designates a series of vents around the heat-ing jacket Q1 of the intake pipe, so as to provide for the escape of the gas after heating said pipe.

designates the inlet water pipe for admitting cooling water to the jackets, and 60 the return or outlet pipe leading from the water spaces of the jackets back to the radiator, not shown.

lVhat is claimed is:

In an internal combustion motor, the conibiinltion of a cylinder, a piston, a crank shaft, a valve shaft parallel to and drivesi 'from the crank shaft, ak gas chest arranged at one side of the cylinder, a rotary disk valve interposed and operating between and in contact at both sides with the cylinder and chest and provided with inlet and exhaust ports which are arranged at unequal distances fronithe axis of the valve and register with similar ports in the cylinder angl chest, said valve being fast on and revolving with the valve shaft, and acln'ng strips supported by the opposing aces of the cylinder and chest and lying in Contact with the opposite faces of said disk valve.

2. ln an internal combustion motor, the combination of a pair of cylinders, pistons working therein, a crank shaft, a valve shaft parallel to and driven from the crank shaft, a gas chest arranged between said cylinders, rotary disk valves interposed and operating between and in contact with the adjacent sides of said cylinders and chest and provided with inlet and exhaust ports which are arranged at unequal distances from the axis of the valve and register with similar ports in the cylinders and chest, said valve being fast on and revolving with the valve shaft. v y

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES F. LEMBKE. VWitnesses NORMAN GREEN, E. G. OsnoRNE. 

